<template>
  <div>
<li :class="isEnter ?'active':''" 
    @mouseenter="mouseChangeHandle('enter')"
    @mouseleave="mouseChangeHandle('leave')"
>
          <label>
            <input type="checkbox" :checked='done' @click="singlecheckHandle(id)"/>
            <span>{{thing}}</span>
          </label>
          <button class="btn btn-danger" @click="singlecheckDeleteHandle(id)">删除</button>
        </li>
       
  </div>
</template>

<script>
export default {
name:'Item',
props:['id','thing','done','singlecheckHandle','singlecheckDeleteHandle'],
//  mounted() {
//     console.log(this,'item的this'); 
//  },

 data(){
    return{
        isEnter:false
    }
 },
 methods: {
    mouseChangeHandle(type){
        this.isEnter=type==='enter'
    }
 },
}
</script>

<style scoped>
/*item*/
li {
  list-style: none;
  height: 36px;
  line-height: 36px;
  padding: 0 5px;
  border-bottom: 1px solid #ddd;
}

li label {
  float: left;
  cursor: pointer;
}

li label li input {
  vertical-align: middle;
  margin-right: 6px;
  position: relative;
  top: -1px;
}

li button {
  float: right;
  display: none;
  margin-top: 3px;
}

li:before {
  content: initial;
}

li:last-child {
  border-bottom: none;
}
li.active{
    background: #ccc;
}
li.active button{
    display: block;
}
</style>